CN113744906B - Dismounting device for intermediate heat exchanger - Google Patents
Dismounting device for intermediate heat exchanger Download PDFInfo
- Publication number
- CN113744906B CN113744906B CN202110919910.XA CN202110919910A CN113744906B CN 113744906 B CN113744906 B CN 113744906B CN 202110919910 A CN202110919910 A CN 202110919910A CN 113744906 B CN113744906 B CN 113744906B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- intermediate heat
- valve
- dismounting device
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000000605 extraction Methods 0.000 claims abstract description 16
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 15
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002285 radioactive effect Effects 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/19—Reactor parts specifically adapted to facilitate handling, e.g. to facilitate charging or discharging of fuel elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present disclosure relates to an intermediate heat exchanger dismounting device comprising: a tubular body which is arranged outside the intermediate heat exchanger in a covering manner from above and seals the intermediate heat exchanger between the tubular bodies when the tubular body is in butt joint with the intermediate heat exchanger supporting cylinder; the lifting part is arranged at the top of the inner side of the cylindrical main body and is provided with an extraction mechanism which can move up and down in the cylindrical main body so as to drive the middle heat exchanger to lift; a gas replacement part arranged on the tubular main body and used for exhausting the gas in the tubular main body or introducing the gas into the tubular main body; and a closing part which is arranged at the bottom of the cylindrical main body and can selectively open or close the cylindrical main body from the bottom. The lifting part drives the middle heat exchanger to lift so as to realize the disassembly and assembly of the middle heat exchanger, and the middle heat exchanger is provided with a closed disassembly and assembly space through the cylindrical main body and the sealing part, and the gas replacement part replaces the gas in the disassembly and assembly space, so that the stability of the middle heat exchanger in the disassembly and assembly device is ensured.
Description
Technical Field
The disclosure relates to the technical field of reactors, in particular to a disassembly and assembly device of an intermediate heat exchanger.
Background
The intermediate heat exchanger is disposed within the reactor main vessel wherein the tube bundle region is immersed in a loop of radioactive sodium pool and the mixed flow chamber to support table mating face portion is in a radioactive sodium environment. The weight of a single intermediate heat exchanger can reach approximately 100t, the height exceeds 15m, the diameter is 2-3m, the reactor is in a shutdown state when the equipment is taken out, but the temperature in the reactor is still about 250 ℃ because the liquid state of coolant sodium is maintained, the temperature of the intermediate heat exchanger equipment is basically consistent with the temperature, if the intermediate heat exchanger is damaged in operation or needs to be taken out from a reactor container when reaching the rated life, the intermediate heat exchanger has quite a dose of radioactivity after long-term operation of the reactor, and the intermediate heat exchanger is taken into consideration as a key equipment, so that a special device for disassembling and assembling the intermediate heat exchanger needs to be developed urgently.
Disclosure of Invention
An object of the present disclosure is to provide a disassembly and assembly device of an intermediate heat exchanger, which ensures sealability when the intermediate heat exchanger is disassembled and assembled.
In order to achieve the above object, the present disclosure provides a disassembly and assembly apparatus of an intermediate heat exchanger, comprising:
a tubular body which is provided outside the intermediate heat exchanger from above and which closes the intermediate heat exchanger between the tubular bodies when the intermediate heat exchanger is docked with the intermediate heat exchanger support tube;
the lifting part is arranged at the top of the cylindrical main body and is provided with an extraction mechanism capable of moving up and down in the cylindrical main body so as to drive the middle heat exchanger to lift;
a gas replacement part provided in the tubular body, for exhausting gas from the tubular body or introducing gas into the tubular body; and
and a closing part provided at the bottom of the cylindrical body, and capable of selectively opening or closing the cylindrical body from the bottom.
Optionally, a radially telescopic placement platform is further arranged in the cylindrical main body, and is used for placing the lifted intermediate heat exchanger.
Optionally, the sealing part comprises a valve matched with the inner diameter of the cylindrical main body, the valve is rotatably connected to the inner wall of the cylindrical main body through a rotating shaft, and the sealing part further comprises a locking mechanism for locking the valve when the valve rotates to a sealing position.
Optionally, the locking mechanism includes a pin extending radially from the outside through an inner wall of the cylindrical body and into the valve.
Optionally, the valve comprises a first valve and a second valve arranged at axial intervals, and the first valve and the second valve are respectively opened or closed independently.
Optionally, the lifting part further includes:
a driving mechanism provided at the top of the cylindrical main body;
the winding drum is connected to the output end of the driving mechanism so as to be capable of rotating;
and one end of the cable is connected with the winding drum, and the other end of the cable is connected with the extraction mechanism.
Optionally, the extracting mechanism comprises a silo for covering the outside of the intermediate heat exchanger, the top of the silo is provided with a connector for connecting the cable, and the bottom of the silo is provided with a threaded hole for connecting with the intermediate heat exchanger through a threaded fastener;
the tail end of the mooring rope is provided with a clamping jaw capable of grabbing the connector.
Optionally, the cylindrical body has a guide rail extending up and down provided on an inner wall and a slider slidably connected to the guide rail, and the jaw is connected to the slider.
Optionally, the cylindrical body is constructed as a multi-section structure which is spliced in sequence in the axial direction.
Optionally, a connection beam is provided at the top of the cylindrical body, the connection beam having a hoisting structure to be hoisted by an external hoisting device.
Through above-mentioned technical scheme, the dismouting device of intermediate heat exchanger that this disclosure provided is covered outside the intermediate heat exchanger through the tube-shape main part, and the extraction mechanism by lifting part is lifted or is put down intermediate heat exchanger, realizes intermediate heat exchanger's dismouting. And the gas inside the dismounting device is replaced by the gas replacement part before the middle heat exchanger is lifted, so that the dismounting device can provide a stable inner space for the middle heat exchanger, the bottom of the whole cylindrical main body can be opened when the sealing part is opened, and the sealing property inside the cylindrical main body can be kept after the dismounting device lifts the middle heat exchanger through the closing of the sealing part.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
fig. 1 is a schematic structural view of a dismounting device provided in an exemplary embodiment of the present disclosure;
FIG. 2 is a partial cross-sectional view of a dismounting device provided in an exemplary embodiment of the present disclosure;
FIG. 3 is another partial cross-sectional view of a dismounting device provided in an exemplary embodiment of the disclosure;
FIG. 4 is a partial schematic view of a dismounting device provided in an exemplary embodiment of the present disclosure;
FIG. 5 is a front view of a hanger provided by an exemplary embodiment of the present disclosure;
fig. 6 is a top view of a hanger provided by an exemplary embodiment of the present disclosure.
Description of the reference numerals
1-a cylindrical body; 11-a guide rail; 12-a slider; 13-connecting beams; 2-lifting part; 21-an extraction mechanism; 211-silo; 212-connecting heads; 213-threaded holes; 214-stiffening beams; 215-dodging holes; 22-cables; 23-clamping jaws; 3-a gas replacement part; 31-a gas conduit valve; 4-closure; 411-first valve; 412-a second valve; 421-a first axis of rotation; 422-a second spindle; 43-locking mechanism; 5-placing a platform; 6, maintaining a platform; 61-climbing a ladder; 7-an intermediate heat exchanger.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise stated, terms such as "up", "down", "top" and "bottom" are used to define the normal use of the dismounting device provided in the present disclosure, and specifically refer to the direction of the drawing plane shown in fig. 1. "inner" and "outer" refer to the inner and outer of the corresponding component profile. Terms such as "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for order or importance. Furthermore, the following description, when taken in conjunction with the accompanying drawings, like reference numerals designate the same or similar elements in different drawings.
Referring to fig. 1, the present disclosure provides a disassembly and assembly device of an intermediate heat exchanger 7, which includes a cylindrical body 1, a lifting portion 2, a gas replacement portion 3, and a closing portion 4. The tubular body 1 may be used to cover the outside of the intermediate heat exchanger 7 from above so as to completely cover the intermediate heat exchanger 7 inside the tubular body 1, and the intermediate heat exchanger 7 may be sealed between the tubular bodies 1 when the intermediate heat exchanger is abutted against the intermediate heat exchanger support tube, so that the intermediate heat exchanger support tube may serve as a support surface and a sealing surface, and the internal space formed by the attachment/detachment device may be isolated from the outside atmosphere. The lifting part 2 can be arranged at the top of the cylindrical main body 1 and is provided with an extraction mechanism 21 which can move up and down in the cylindrical main body 1 so as to drive the intermediate heat exchanger 7 to lift and fall, thereby being convenient for lifting and falling the intermediate heat exchanger 7 in a reactor container and avoiding that the intermediate heat exchanger 7 is not easy to operate by staff due to overhigh temperature or radioactivity.
The gas replacement part 3 may be provided in the tubular body 1, and may be used to discharge gas from the tubular body 1 or to introduce gas into the tubular body 1. According to some embodiments provided by the present disclosure, the intermediate heat exchanger 7 may be applied to a pool-type sodium cooled fast reactor, where the surface may become stuck with radioactive sodium when extracted from the reactor vessel from the intermediate heat exchanger 7. Therefore, before the intermediate heat exchanger 7 is lifted from the reactor, the air inside the dismounting device can be discharged through the gas pipeline valve 31, and argon is introduced into the dismounting device through the other gas pipeline valve 31, so that the reaction of sodium on the surface of the intermediate heat exchanger 7 and the air is avoided, and the stability inside the dismounting device is ensured.
The closing portion 4 may be provided at the bottom of the cylindrical body 1, and can selectively open or close the cylindrical body 1 from the bottom. When the intermediate heat exchanger 7 is lifted from the reactor by the lifting portion 2 of the dismounting device and can be moved with the dismounting device, the closing portion 4 is closed so that the intermediate heat exchanger 7 remains closed during the movement. When the intermediate heat exchanger 7 moves to the preheating trap or the cleaning trap position along with the dismounting device, the intermediate heat exchanger 7 can be lowered through the lifting part 2, and then the sealing part 4 is opened to be placed on the preheating trap support to be in butt joint with the preheating trap for preheating, or placed on the cleaning trap support to be in butt joint with the cleaning trap for cleaning.
Through the above technical scheme, the disassembly and assembly device for the intermediate heat exchanger 7 provided by the present disclosure is characterized in that the tubular main body 1 is covered outside the intermediate heat exchanger 7, and the intermediate heat exchanger 7 is lifted up or put down by the extraction mechanism 21 of the lifting part 2, so that the disassembly and assembly of the intermediate heat exchanger 7 is completed. And the gas inside the dismounting device is replaced by the gas replacement part 3 before the intermediate heat exchanger 7 is lifted, so that the dismounting device can provide a stable inner space for the intermediate heat exchanger 7, and the dismounting device can meet the working requirement of the intermediate heat exchanger 7 by opening and closing the sealing part 4.
Referring to fig. 1, a radially telescopic placement platform 5 may be further disposed in the cylindrical main body 1, for placing the intermediate heat exchanger 7 lifted by the lifting portion 2. The placement platform 5 may include an electric control mechanism provided inside the cylindrical body 1 and a support body arranged along the circumferential direction of the cylindrical body 1. When the intermediate heat exchanger 7 is lifted to the final height, the supporting body is controlled by the electric control mechanism to extend radially, and the lifting height is slightly reduced, for example, 20-30 mm, so that the intermediate heat exchanger 7 is placed on the supporting body, and the lifting part 2 is prevented from being stressed all the time, thereby ensuring that the intermediate heat exchanger 7 maintains a stable posture in the transportation process. When the intermediate heat exchanger 7 needs to be put down, the electric control mechanism controls the supporting body to retract so as to avoid the intermediate heat exchanger 7, and the placing platform 5 is ensured not to interfere with the lowering of the intermediate heat exchanger 7. Meanwhile, a guard rail with a certain height can be arranged on the outer contour of the placement platform 5, so that the stability of the middle heat exchanger 7 in the dismounting device is further improved.
Referring to fig. 2 and 3, the closing portion 4 may include a valve matched with the inner diameter of the cylindrical body 1, so that the air tightness of the closing portion 4 can be effectively ensured when the valve is closed. The valve can be rotatably connected on the inner wall of the cylindrical main body 1 through the rotating shaft, and according to some embodiments provided by the disclosure, the sealing part 4 can further comprise a driving mechanism, and the driving mechanism drives the rotating shaft to rotate so as to drive the valve to be opened or closed, so that the valve can not be in an opened or closed state by itself, and the using effect of the valve is ensured. The closing portion 4 may further comprise a locking mechanism 43, and when the valve is closed, the locking mechanism 43 can improve the closing force of the valve, so that the tightness and stability of the closing portion 4 are effectively improved.
Further, referring to fig. 2 and 3, the locking mechanism 43 may comprise a pin extending radially from the outside through the inner wall of the cylindrical body 1 and into the valve. The pin may be arranged on the inner wall of the cylindrical body 1 at the same level as the valve is closed to ensure the locking effect of the locking mechanism 43 on the valve. According to some embodiments provided by the disclosure, the pins are arranged at intervals along the circumferential direction on the inner wall of the cylindrical main body 1, so that the locking effect on the valve is further improved, the closing force required by sealing the valve is maintained, and the sealing requirement is met. Wherein the locking mechanism 43 may be extended or retracted by a motor, such as a servo motor, or by operator control.
Referring to fig. 2 and 3, the valve may include first and second valves 411 and 412 disposed at axial intervals to effectively enhance the sealing effect of the closure. The first valve 411 and the second valve 412 can be opened or closed independently, so that the first valve 411 and the second valve 412 are not interfered with each other when being opened or closed, so as to adapt to the use requirement of the dismounting device. Specifically, the first valve 411 may be rotatably connected to the cylindrical body 1 through a first rotation shaft 421, and the second valve 412 may be rotatably connected to the cylindrical body 1 through a second rotation shaft 422. When the first valve 411 and the second valve 412 are both in the closed state, the sealing portion 4 can drive the first valve 411 to rotate downwards through the first rotating shaft 421 so as to open the first valve 411, and can drive the second valve 412 to rotate upwards through the second rotating shaft 422 so as to open the second valve 412, so that the first valve 411 and the second valve 412 occupy the same height space when in the open state, and the overall height of the dismounting device is reduced. By the cooperation of the first valve 411 and the second valve 412, an effective isolation of the reactor vessel and the dismounting device from the outside is ensured.
Referring to fig. 4, the lifting part 2 may further include: a drive mechanism, a drum, and a cable 22. The driving mechanism can be arranged on the outer side of the top of the cylindrical main body 1, and is prevented from being contacted with high Wen Chao moisture in the disassembly and assembly process, so that the service life of the driving motor is prolonged, stable power can be continuously provided for the disassembly and assembly device, and meanwhile, the driving mechanism is used. The driving mechanism can comprise a lifting motor, a lifting brake, a lifting speed reducer and other parts, and the specific driving mechanism is not limited by the present disclosure, so long as the working requirements of the dismounting device are met. The reel can be connected with the output end of the driving mechanism so as to be capable of rotating, the cable 22 is wound on the reel, stability of the reel is guaranteed when the intermediate heat exchanger 7 is lifted or released, one end of the cable 22 is connected with the reel and arranged on the outer side of the tubular main body 1, the other end of the cable 22 stretches into the inner side of the tubular main body 1 and is connected with the extraction mechanism 21, tightness of the top of the tubular main body 1 is guaranteed, the cable 22 is wound on the reel, the cable 22 is made to have enough length to meet the height requirement of the extraction mechanism 21 for lifting and lowering the intermediate heat exchanger 7, the cable 22 is convenient to store so as to reduce space occupation rate, and the cable 22 can be a steel cable so as to guarantee that the cable 22 has enough rigidity to guarantee stability of the lifting part 2.
Further, referring to fig. 4, 5 and 6, the extracting mechanism 21 may include a silo 211 for covering the outside of the intermediate heat exchanger 7 to prevent the intermediate heat exchanger 7 from being scratched or deformed by impact during lifting or lowering of the inside of the dismounting device, and a plurality of reinforcing beams 214 extending downward from the top and a short reinforcing beam having a length direction perpendicular to the length direction of the reinforcing beams 214 are formed along the outer wall of the silo 211 to improve the rigidity and strength of the silo 211 and further ensure the stability of the intermediate heat exchanger 7 placed inside the silo 211.
The top of the silo 211 may be provided with a connector 212 for connecting the cable 22, ensuring the structural integrity of the silo 211 while ensuring the reliability of the connection between the silo 211 and the cable 22. The bottom of the silo 211 can be provided with threaded holes 213, the silo 211 is connected with the intermediate heat exchanger 7 through threaded fasteners, the threaded fasteners can sequentially penetrate through mounting holes in the intermediate heat exchanger 7 and the threaded holes 213 in the silo 211, so that the intermediate heat exchanger 7 is detachably connected with the silo 211, the threaded holes 23 can be arranged at intervals along the outer contour of the bottom of the silo 211, the mounting holes in the intermediate heat exchanger 7 are correspondingly arranged, the silo 211 is connected with the intermediate heat exchanger 7 through a plurality of fasteners, the connection strength between the silo 211 and the intermediate heat exchanger 7 is effectively improved, and the lifting and lowering reliability of the intermediate heat exchanger 7 by the extraction mechanism 21 is ensured. The end of the cable 22 may be provided with a gripping jaw 23 capable of gripping the connector 212 to further increase the strength of the connection between the cable 22 and the silo 211. A relief hole 215 may be formed in the silo 211 at a connection pipe corresponding to the intermediate heat exchanger 7, so that the silo 211 can adapt to the outer contour structure of the intermediate heat exchanger 7.
Further, referring to fig. 1 and 4, the cylindrical body 1 has a guide rail 11 provided on an inner wall to extend up and down and a slider 12 slidably connected to the guide rail 11, and the holding jaw 23 is connected to the slider 12 so that the holding jaw 23 can follow the movement of the slider 12 to drive the entire lifting mechanism 2 to slide in the extending direction of the guide rail 12, so that the intermediate heat exchanger 7 is lifted or lowered in accordance with a prescribed movement track, thereby further ensuring the stability of the movement of the intermediate heat exchanger 7 in the dismounting device.
Referring to fig. 1, the cylindrical body 1 may be constructed in a multi-stage structure in which it is axially sequentially spliced. The cylindrical body 1 can be ensured to have different heights according to different use requirements, and meanwhile, the assembly and the storage of the disassembly and assembly device are convenient.
Further, the top of the cylindrical body 1 is provided with a connection beam 13, and the connection beam 13 has a hoisting structure so as to be hoisted by an external hoisting device. The dismounting device is connected with the crane of the reactor hall through the hoisting structure, so that the stability of the dismounting device in the process of dismounting the intermediate heat exchanger 7 and driving the intermediate heat exchanger 7 to move is ensured.
Referring to fig. 1, the dismounting device may further include a maintenance platform 7 disposed on the upper portion of the placement platform 5, where a ladder 61, such as a vertical ladder or a diagonal ladder, may be disposed on the maintenance platform 7, so as to provide a working environment for the staff to overhaul and maintain the dismounting device.
According to one embodiment of the present disclosure, the specific working process of the dismounting device is as follows: taking the example of the intermediate heat exchanger 7 from the sodium cooled fast reactor to the purge trap. The spliced cylindrical body 1 is covered outside the intermediate heat exchanger 7 placed on the reactor support cylinder, and the driving mechanism of the lifting part 2 drives the extraction mechanism 21 to fall so as to cover the silo 211 of the extraction mechanism 21 on the intermediate heat exchanger 7. Before the intermediate heat exchanger 7 is lifted, the air in the dismounting device is discharged through the air replacement part 3 and argon is introduced, then the drum is driven by the driving mechanism of the lifting part 2 to retract the cable 22, so that the intermediate heat exchanger 7 is lifted through the extraction mechanism 21 and moves upwards along the guide rail, then the valve of the closing part 4 is closed, and when the intermediate heat exchanger 7 is lifted to the place platform 5, the supporting body of the place platform 5 stretches out, and the intermediate heat exchanger 7 is stably placed on the place platform 5. The dismounting device drives the intermediate heat exchanger 7 to move to the cleaning trap along the reactor hall crane, the supporting body of the placing platform 5 is retracted to avoid the intermediate heat exchanger 7, the driving mechanism of the lifting part 2 drives the winding drum release cable 22, the intermediate heat exchanger 7 is lowered through the extracting mechanism 21, when the intermediate heat exchanger 7 is lowered to the sealing part 4, the valve is opened, and the extracting mechanism 21 lowers the intermediate heat exchanger 7 to the position where the intermediate heat exchanger can be butted with the cleaning trap through the cleaning trap support and is cleaned.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure. In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.
Claims (9)
1. An intermediate heat exchanger dismounting device, comprising:
a tubular body (1) which is provided outside the intermediate heat exchanger (7) by being covered from above, and which closes the intermediate heat exchanger (7) between the tubular bodies (1) when the intermediate heat exchanger support tube is in butt joint therewith;
a lifting part (2) which is arranged at the top of the cylindrical main body (1) and is provided with an extraction mechanism (21) which can move up and down in the cylindrical main body (1) so as to drive the intermediate heat exchanger (7) to lift;
a gas replacement unit (3) provided in the tubular body (1) and configured to discharge gas from the tubular body (1) or to introduce gas into the tubular body (1); and
a closing part (4) provided at the bottom of the tubular body (1) and capable of selectively opening or closing the tubular body (1) from the bottom;
the sealing part (4) comprises a valve matched with the inner diameter of the cylindrical main body (1), the valve is rotatably connected to the inner wall of the cylindrical main body (1) through a rotating shaft, and the sealing part (4) further comprises a locking mechanism (43) for locking the valve when the valve rotates to a sealing position.
2. Dismounting device according to claim 1, characterized in that the cylindrical body (1) is further provided with a radially telescopic placement platform (5) for placing the lifted intermediate heat exchanger (7).
3. The dismounting device as claimed in claim 1, characterized in that the locking mechanism (43) comprises a pin passing radially from the outside through the inner wall of the tubular body (1) and protruding into the valve.
4. The dismounting device as claimed in claim 1, characterized in that the valve comprises a first valve (411) and a second valve (412) arranged axially spaced apart, the first valve (411) and the second valve (412) being each independently opened or closed.
5. Dismounting device according to claim 1, characterized in that the lifting part (2) further comprises:
a driving mechanism provided on the top of the tubular body (1);
the winding drum is connected to the output end of the driving mechanism so as to be capable of rotating;
and a cable (22) wound on the drum, wherein one end of the cable (22) is connected with the drum, and the other end is connected with the extraction mechanism (21).
6. Dismounting device according to claim 5, characterized in that the extraction means (21) comprise a silo (211) for covering the outside of the intermediate heat exchanger (7), the top of the silo (211) being provided with a connection head (212) for connecting the cable (22), the bottom of the silo (211) having a threaded hole (213) for connecting with the intermediate heat exchanger (7) by means of a threaded fastener;
the tail end of the cable (22) is provided with a clamping jaw (23) which can grab the connector (212).
7. The dismounting device as claimed in claim 6, characterized in that the tubular body (1) has a guide rail (11) provided on the inner wall and extending up and down, and a slider (12) slidably connected to the guide rail (11), and the holding jaw (23) is connected to the slider (12).
8. Dismounting device according to claim 1, characterized in that the cylindrical body (1) is constructed as a multi-segment structure spliced axially in sequence.
9. Dismounting device according to claim 8, characterized in that the top of the tubular body (1) is provided with a connecting beam (13), which connecting beam (13) has a hoisting structure to be hoisted by an external hoisting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110919910.XA CN113744906B (en) | 2021-08-11 | 2021-08-11 | Dismounting device for intermediate heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110919910.XA CN113744906B (en) | 2021-08-11 | 2021-08-11 | Dismounting device for intermediate heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113744906A CN113744906A (en) | 2021-12-03 |
| CN113744906B true CN113744906B (en) | 2024-03-22 |
Family
ID=78730737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110919910.XA Active CN113744906B (en) | 2021-08-11 | 2021-08-11 | Dismounting device for intermediate heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113744906B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB849277A (en) * | 1957-01-31 | 1960-09-21 | Babcock & Wilcox Ltd | Improvements in nuclear reactors |
| BE600080A (en) * | 1960-02-12 | 1961-08-10 | Sulzer Ag | Atomic pile. |
| GB1024243A (en) * | 1962-01-19 | 1966-03-30 | Legrand Pierre | Improvements in or relating to nuclear power plant with built-in heat exchanger |
| US4002529A (en) * | 1974-01-02 | 1977-01-11 | Combustion Engineering, Inc. | Nuclear fuel handling apparatus |
| GB1550978A (en) * | 1977-06-24 | 1979-08-22 | Shumyakin E P | And others methods and apparatus for refuelling nuclear reactors |
| US4194787A (en) * | 1978-01-13 | 1980-03-25 | Williamsen Truck Equipment Corporation | Dump body with inside gate |
| RU15415U1 (en) * | 2000-01-10 | 2000-10-10 | Обнинский инженерный центр научно-исследовательского и конструкторского института монтажной технологии, государственное унитарное предприятие | NUCLEAR REACTOR DISMANTLING TECHNOLOGY LINE |
| JP2010025495A (en) * | 2008-07-23 | 2010-02-04 | Denso Corp | Joint device for heat exchanger |
| JP2014059149A (en) * | 2012-09-14 | 2014-04-03 | Mitsubishi Heavy Ind Ltd | Dismantling method for heat exchanger |
| CN105645318A (en) * | 2015-12-29 | 2016-06-08 | 中国原子能科学研究院 | Straight pulling type loading and unloading elevator for fast reactor |
| WO2019191669A1 (en) * | 2018-03-29 | 2019-10-03 | Nikola Lakic | Self-contained in-ground geothermal generator and heat exchanger with in-line pump used in several alternative applications including the restoration of the salton sea |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8695626B2 (en) * | 2010-12-23 | 2014-04-15 | Advanced Valve Technologies, Inc. | Systems and methods for valve insertion and linestopping |
-
2021
- 2021-08-11 CN CN202110919910.XA patent/CN113744906B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB849277A (en) * | 1957-01-31 | 1960-09-21 | Babcock & Wilcox Ltd | Improvements in nuclear reactors |
| BE600080A (en) * | 1960-02-12 | 1961-08-10 | Sulzer Ag | Atomic pile. |
| GB1024243A (en) * | 1962-01-19 | 1966-03-30 | Legrand Pierre | Improvements in or relating to nuclear power plant with built-in heat exchanger |
| US4002529A (en) * | 1974-01-02 | 1977-01-11 | Combustion Engineering, Inc. | Nuclear fuel handling apparatus |
| GB1550978A (en) * | 1977-06-24 | 1979-08-22 | Shumyakin E P | And others methods and apparatus for refuelling nuclear reactors |
| US4194787A (en) * | 1978-01-13 | 1980-03-25 | Williamsen Truck Equipment Corporation | Dump body with inside gate |
| RU15415U1 (en) * | 2000-01-10 | 2000-10-10 | Обнинский инженерный центр научно-исследовательского и конструкторского института монтажной технологии, государственное унитарное предприятие | NUCLEAR REACTOR DISMANTLING TECHNOLOGY LINE |
| JP2010025495A (en) * | 2008-07-23 | 2010-02-04 | Denso Corp | Joint device for heat exchanger |
| JP2014059149A (en) * | 2012-09-14 | 2014-04-03 | Mitsubishi Heavy Ind Ltd | Dismantling method for heat exchanger |
| CN105645318A (en) * | 2015-12-29 | 2016-06-08 | 中国原子能科学研究院 | Straight pulling type loading and unloading elevator for fast reactor |
| WO2019191669A1 (en) * | 2018-03-29 | 2019-10-03 | Nikola Lakic | Self-contained in-ground geothermal generator and heat exchanger with in-line pump used in several alternative applications including the restoration of the salton sea |
Non-Patent Citations (3)
| Title |
|---|
| "A COMPACT COPPER NUCLEAR DEMAGNETIZATION REFRIGERATOR";FROSSATI, G et al.;《PHYSICA B-CONDENSED MATTER》;19940201;全文 * |
| Gr.2钛薄板成型可拆板式热交换器板片的研究;杨进纳;王彦龙;;化学工程与装备;20151215(第12期);全文 * |
| 主回路热交换器结构优化设计;殷保稳;郭志家;韩海芬;;科技创新导报;20200621(第18期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113744906A (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10304576B2 (en) | Canister transfer system with independent traveling shielded bell | |
| US5661768A (en) | Spent nuclear fuel (SNF) dry transfer system | |
| JP3663924B2 (en) | Method for handling reactor internal structure and apparatus used for the method | |
| JPS6123519B2 (en) | ||
| US5369676A (en) | Reactor refueling mechanism | |
| JP4958954B2 (en) | Control rod handling method and control rod handling device | |
| CN113077917A (en) | Radioactive sample transfer device and transfer system | |
| CN113744906B (en) | Dismounting device for intermediate heat exchanger | |
| JP6338446B2 (en) | Fuel debris retrieval device and fuel debris retrieval method | |
| WO2025041038A1 (en) | Fuel assembly handling system and process | |
| WO2021248388A1 (en) | Nuclear fuel assembly loading/unloading container and method for loading/unloading nuclear fuel assembly | |
| KR101736166B1 (en) | Delivery system of the radioactive waste within hot cell | |
| CN116588787A (en) | Hoisting system for internal components | |
| WO2024027092A1 (en) | Integrated reactor, and charging and refueling system and method | |
| JPH1073692A (en) | Device for handling core internals | |
| CN111383786A (en) | Method for changing material of pool reactor | |
| JPH0129436B2 (en) | ||
| US5577084A (en) | Apparatus for removing and installing a recirculation pump in a pressure housing | |
| JPS6329279Y2 (en) | ||
| JPH03252596A (en) | Replacing device for fuel assembly | |
| JP2001013290A (en) | Reactor fuel-handing device | |
| US20090213979A1 (en) | Nuclear power station comprising at least one high temperature reactor | |
| JPH02285292A (en) | Control rod handling machine | |
| KR20250014299A (en) | Apparatus for handling long-distance nuclear fuel and its method | |
| JPH07120585A (en) | Handling tool for diffuser wear ring |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |